Stir-Fry Beef and Vegetables with Oyster Sauce is a delicious and healthy dish that combines tender beef, crisp vegetables, and a savory oyster sauce. The beef is marinated in a flavorful mixture of soy sauce, garlic, and ginger, then quickly stir-fried with an assortment of colorful vegetables. The oyster sauce adds a rich umami flavor to the dish, making it a perfect accompaniment to steamed rice or noodles. This stir-fry is quick and easy to make, making it a great option for a weeknight dinner.